#343B57

#343B57

Color Values

HEX

#343B57

RGB

52, 59, 87

HSL

228.0, 25.2%, 27.3%

HSV

228.0, 40.2%, 34.1%

CMYK

40.2%, 32.2%, 0.0%, 65.9%

OKLCH

0.3587 0.0496 272.9

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#343B57

#575034

Analogous

#344D57

#3F3457

#343B57

Triadic

#343B57

#57343B

#3B5734

Split Complementary

#343B57

#573F34

#4D5734

Tetradic

#343B57

#57344D

#575034

#34573F

Color Blindness Simulation

Original

#343B57

Protanopia

#373750

Deuteranopia

#37364F

Tritanopia

#344B4A

Achromatopsia

#3C3C3C

CSS Usage

background-color: #343B57;
color: #343B57;
border-color: #343B57;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F6F9
100
#E9EBF1
200
#D2D6E4
300
#B2B9D1
400
#8992B8
500
#5F6CA0
600
#4C5780
700
#3D4566
800
#303650
900
#252A3B
950
#181A26

Contrast Checker

Text on white

11.0:1

AA Pass AAA Pass

Text on black

1.91:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026